# AI Visibility Checker for Perplexity & ChatGPT > Practical guides for measuring mentions, citations, and referrals. A free llms.txt Generator. Live Perplexity API checks and paid reports are currently unavailable. ## Tools - [llms.txt Generator](https://www.getgeoagent.com/llms-txt-generator): Create and download an editable draft from public links. - [AI Visibility Check availability](https://www.getgeoagent.com/ai-visibility-checker): Manual method and current availability. ## Guides - [how can i monitor perplexity brand mentions](https://www.getgeoagent.com/monitor-perplexity-brand-mentions): Build a repeatable prompt list, save the answers, and distinguish mentions from citations. - [how do i measure visibility in perplexity searches](https://www.getgeoagent.com/measure-visibility-in-perplexity): Define mention rate, citation rate, and a denominator that makes comparisons meaningful. - [how to track a client's brand visibility in chatgpt and perplexity](https://www.getgeoagent.com/track-brand-visibility-chatgpt-perplexity): Set a client-specific scope and report ChatGPT and Perplexity evidence in separate series. - [does adding an llms.txt file help with ai search visibility](https://www.getgeoagent.com/does-llms-txt-help-ai-visibility): What official sources establish, what remains unconfirmed, and when a simple file is useful. - [How do I track ChatGPT and Perplexity referral traffic in GA4?](https://www.getgeoagent.com/chatgpt-referral-traffic): Find the traffic acquisition report and apply specific source filters for both platforms. - [What are the best GEO tools for SaaS?](https://www.getgeoagent.com/best-geo-tools-for-saas): Compare Profound, Peec AI, Otterly.AI, Semrush, and our free tool by the task you need to complete. ## Site information - [Privacy](https://www.getgeoagent.com/privacy) - [Terms](https://www.getgeoagent.com/terms)